[[folder: Main Characters]]
!Goro Honda
* TheAce
* BerserkButton: Speaking ill about his father.
* {{Determinator}}: Noted by many characters and at least one [[IncrediblyLamePun major]] example per season.
** At the end of season 1, [[spoiler: Goro continues to play with a seriously injured arm that will later in the series unable him to no longer pitch with that arm. This leads him to training himself how to become left-handed, initially doing everything with his left-arm]].
* HappilyAdopted: [[spoiler:At first, [[DeceasedParentsAreTheBest it doesn't start out that way]] but Goro does warm up to Momoko and later Hideki]]
* TheHero: ''Major'' revolves around Goro's baseball life from childhood to adulthood.
* HeroicBSOD: [[spoiler:Goes through one thanks to his yips]].
* HeroicSafeMode: [[spoiler:When dealing with the yips]]
* HotBlooded: Though this begins to die down in later seasons.
* ICanStillFight: Part of his determinator personality.
* JerkWithAHeartOfGold
* SouthPaw: By season 2.
* TookALevelInBadass: Every season he learns a new trick related to pitching that makes him even better.

!Toshiya Sato
* TheAce
* {{Bishounen}}: From Season 2 onwards.
* BrokenAce: [[spoiler:Becomes one after his parents abandoned him.]]
* {{Chessmaster}}
* ChickMagnet
* HappilyAdopted: [[spoiler:Though he is a bit unstable from his ParentalAbandonment, he is genuinely grateful for his grandparents who have take care of him. It later motivates him to do well in order to pay them back]].
* [[spoiler: HeroicBSOD: Implied to have gone through one after his ParentalAbandonment. A smaller one occurs later in season 6 after he meets his sister and remembers old memories. Luckily, he does get better]].
* TheLancer: When he's not Goro's rival, he'll fill this role.
* NiceGuy
* ParentalAbandonment: [[spoiler:His parents just left him when he was only a child.]]
* RaisedbyGrandparents: [[spoiler:His grandparents take him in.]]
* TheRival: Despite playing different positions and having been on the same team numerous times, both Goro and Sato considered themselves each other's rivals.
* TheSmartGuy: Usually known as a genius rookie catcher.
* TheStrategist: Proven to be a talented one as his potision requires him to be one though at the start of season 6, he starts waning. Luckily, he gets better.
* [[spoiler: TraumaCongaLine: Oh boy]].

!Kaoru Shimizu
* HappilyMarried: [[spoiler:To Goro.]]
* IWantMyBelovedToBeHappy: [[spoiler: feels this way towards her husband and her children, saying that her dream is for them to be happy]].
* PassionateSportsGirl - For softball, though partially to feel closer to Goro.
* PatientChildhoodLoveInterest
* {{Tsundere}}- To Goro though this dies down in season 6.
* VictoriousChildhoodFriend: [[spoiler: In season 1, there was a bit of a minor LoveTriangle where Kaoru had feelings for Goro, who in turn, had feelings for Ryoko. However, Ryoko ended up insulting Goro's deceased father; this, combined with Ryoko being DemotedToExtra, makes it a ForegoneConclusion as to who he ends up with]].

!Daisuke Komori
* NiceGuy: Willing to forgive people who have bullied him and become very friends with them.


[[folder: Introduced in Season 1]]
!Shigeharu Honda
* GoodParents: He is very close to his son though is strict when he has to be. When he learned the local little league coach signed Goro up as a pitcher despite being under-aged, Honda Shigeharu forbids him from joining because using the real baseball at a young can seriously harm Goro's hand. Goro does understand and does wait til he's at the proper age to join.
* NiceGuy
* [[spoiler: TooGoodForThisSinfulEarth]]

!Joe Gibson
* TheAce
* [[spoiler: TheAtoner: For killing Shigeharu Honda accidentally. Unfortunately the way he went about it ruined his own family.]]
* TenMinuteRetirement: Gets forced into retirement due to [[spoiler: heart problems]] at the end of season 5. [[spoiler: This lasts all of 7 episodes before HesBack]].

!Momoko Shigeno
* ParentsAsPeople: She does try her honest best to be a good a mother but Goro unintentionally pushes her away at times and she is unsure how to respond to that.
* YamatoNadeshiko

!Hideki Shigeno
* [[spoiler: TheAlcoholic: Temporarily becomes one in season 6 when he was failing at his baseball career. He does break out of it]].
* Foil: As a parent, he's one to Joe Gibson - Hideki eventually calls it quits due to getting stuck in a runt, while Gibson is forced into a TenMinuteRetirement due to health reasons. Gibson's son is his biological son, whereas Goro is Hideki's [[spoiler: adoptive]] son, but whereas Joe Gibson doesn't get along with Joe Gibson Jr due to [[spoiler: how Sr. chose to be TheAtoner]], Hideki and Goro get along, even with some disagreements. And while Sr. is unable to give advice to Jr. due to the two playing different positions (and the former never having been in a similar situation), thanks to his experience with Honda, Hideki is easily able to give Goro advice as a pitcher and a player in general.
* ParentsAsPeople: Not that he isn't a good father but does have problems getting through to Goro. Does offer Goro advice from time to time and is the one who suggested to [[spoiler: switch arm dominance when Goro couldn't use is pitch with his right arm no longer]].
* NiceGuy

!Ryoko Kawase
* ActionGirl
* AdaptationExpansion: She only appeared in season 1 in the manga. However, in season 4 of the anime, she trains Goro with her sliders while in the manga, it was Taiga.
* BraidsOfAction: Kept her hair this way in season 1.
* PassionateSportsGirl

[[folder: Introduced in Yuujou no Ikkyuu]]
!Masato Koga

!Megumi Koda

[[folder: Introduced in Season 2]]
!Shingo Shigeno

!Masataka Oobayashi

!Yamane Yoshitaka
* {{Jerkass}} - Until Goro talked sense into him and Komori was willing to be friends with him.

!Egashira Tetsufumi
* BigBad: Of season 2.
* HateSink: It's probably easier to list moments where he ''doesn't'' fit this trope than ones that do.
* LaserGuidedKarma: [[spoiler: His abuse of his abilities and harsh style of teaching get him fired]].

!Shizuka Saotome

!Taizou Saotome


!Ken Mayumura
* TheAce
* TheStoic: Doesn't have much to say, but is always composed for baseball games.

!Naoki Enomoto

!Ichiro Yamada

!Ayane Suzuki

[[folder: Introduced in Season 3]]
* ButtMonkey

* {{Jerkass}}: Pre CharacterDevelopment.

!Taiga Shimizu
* DeadpanSnarker

!Ichiro Yamada/Steve Timothy
* ReasonableAuthorityFigure

!Miho Nakamura
* AdrenalineMakeover: At season 4.
* ChuckCunninghamSyndrome: Despite being Sato's potential love interest, we never see her again after her one appearance in season 4.
* LongHairisFeminine
* SmittenTeenageGirl

[[folder: Introduced in Season 4]]
!Ginuma/Hayato Yagunima

* NiceGuy
* SuspiciouslySimilarSubstitute: Arguably for Toshi, due to their shared position (catcher) and status as a NiceGuy. Somewhat Justified, since Toshi didn't go with Goro when the latter went to the US.

* CoolOldGuy

!Alice Jinnai
* BareYourMidriff: Both her casual and her cheerleader uniform.
* GenkiGirl

!Joe Gibson Jr.
* TheAce
* FreudianExcuse - He's a {{Jerkass}} to Goro at first since his dad started to neglect his family in order to atone for [[spoiler: killing Shigeharu Honda]].

!Jeff Keane
* TheAce
* OhCrap: If something that goes against his statistics/predictions comes up, he will more likely than not have this reaction.
* StartOfDarkness: [[spoiler: He originally was a catcher who was rather idealistic, not unlike Goro. However, one time he decided to believe in a pitcher, which cost his team the game and got them eliminated from a tournament]]. While it doesn't cause him to become a full-blown villain (early on, he's a TokenEvilTeammate at worst), it ''does'' make him start on the wrong foot with Goro.
* TheStoic
* TheStrategist: Reason why he [[spoiler: takes Sanders place as catcher]].
* WellIntentionedExtremist: He ''does'' genuinely care about playing the game. It's just that his focus on using stats to win is a bit too extreme if you don't share the same mindset.

[[folder: Introduced in Season 5]]
!Waka Onodera[[spoiler:/Miho Sato]]
* [[spoiler: [[LukeIAmYourFather Toshi I am your sister]]]]



[[folder: Introduced in Season 6]]
!Richard Watts
* TheHeart: He's a bit blunt about it, but he does his best to keep the team together.

!Billy Oliver

!Mike Murdoch
* FreudianExcuse
* HeelRealization: [[spoiler: Upon seeing Goro actually giving him advice and having faith in him, he realizes that the problem isn't that he wasn't being accepted by his teammates, but rather, he wasn't accepting them]].
* JerkWithAHeartOfGold


[[folder: Introduced in World Series]]